/*
 * Copyright 2016 Code Above Lab LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.codeabovelab.dm.cluman.reconfig;

import lombok.AllArgsConstructor;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.stereotype.Component;

/**
 */
@AllArgsConstructor(onConstructor = @__(@Autowired))
@Component
public class ReConfigurableBeanPostProcessor implements BeanPostProcessor {

    private final AppConfigService configService;

    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        return bean;
    }

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        Class<?> type = bean.getClass();
        ReConfigurable ann = AnnotationUtils.findAnnotation(type, ReConfigurable.class);
        if(ann == null) {
            return bean;
        }
        configService.registerIfAbsent(beanName, () -> new ReConfigurableBeanAdapter(beanName, bean));
        return bean;
    }
}
